Lorcana has a generous mulligan rule that allows you to redraw as many cards as you want in your opening hand, so take advantage of that opportunity and try to start each game with the best curve possible
This card lets you prevent all damage that would be dealt to one of your Creatures for a turn, netting +1/+1 counters on that Creature equal to the amount of damage prevented
On a buylist, youre lucky to get 50% of the retail in cash, generally speaking
You can double Force Spike a non-creature spell, but for that mana at 1U but can just counter a noncreature outright with Negate
If you want an alternate win condition for a non-Standard lifegain deck, I recommend Chalice of Life
To confirm my experiences from testing I thought I would do some maths on the subject which mostly lead to remembering how bad I am at probability